Shulou(Shulou.com)06/01 Report--

1. The name (hostname) of each node should be set.

2. It is recommended that the network card used for private communication should be bound with two network cards, and the names of the network cards of each node should be the same.

3. Public ip, virtual ip and scan ip must be on the same IP address range, and private ip must be on another IP address range. Virtual ip cannot be connected to ping until grid is installed.

4. Memory size: when the memory is 2.5GB-16GB, Swap needs to be greater than or equal to system memory; when the memory is greater than 16GB, Swap is equal to 16GB.

5. Before installing Oracle 11gR2 under Oracle Linux 6, we need to do some checks, and the Pre-install package (included in the installation media of the oracle linux6.5 (64bit) system) can help us do most of the configuration work.

What the oracle-rdbms-server-11gR2-preinstall package does

(1) automatically install the RPM package required by oracle

Check the dependency package: yum list binutils compat-libstdc++-33elfutils-libelf elfutils-libelf-devel gcc gcc-c++ glibc glibc-commonglibc-devel glibc-headers ksh libaio libaio-devel libgcc libstdc++libstdc++-devel make numactl-devel sysstat unixODBC unixODBC-devel

(2) automatically create oracle users and group groups

(3) automatically configure / etc/sysctl.conf kernel parameters

(4) automatically configure / etc/security/limits.conf parameters

(5) disable NUMA=OFF (disable non-uniform memory access)

6. Configure SSH mutual trust (both oracle and grid users need mutual trust)

This is a critical step, although it is stated in the official documentation that OUI automatically configures SSH when installing GI and RAC, but in order to use CVU to check the configuration before installation, it is better to configure mutual trust manually.

If the mutual trust configuration fails, check the system log first to see if the system firewall is turned off? Is there any antivirus software? Does the system have security reinforcement settings?...

7. In general, if you cannot enter the graphical interface when installing oracle remotely through SCRT on windows, please make sure that xmanager 4 is installed first? Then start the Xmanager-Passive program, first execute export DISPLAY=ip:0.0 in SCRT (where ip is the ip of your local machine, which can be viewed in SCRT), then execute xhost + as root user, appear access control disabled, clients can connect from any host, then switch to install user grid, and finally execute. / runInstaller, the page will come out! It is important to note that your local machine's firewall should be excepted or turned off.

8. In the ASM file system where ORC information is stored, the size of a single ASM file should be greater than 869MB, otherwise an error of [INS-30515] may be reported.

9. The Hard Limit and soft limut restrictions for users of grid need to be modified.

10, [INS-20802] Oracle Cluster Verification Utility failed

The reason for this error is that we use / etc/hosts instead of DNS to implement SCAN IP, as long as the SCAN IP can be ping, if it can be successful, the error can be ignored.

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